CityMaster 48EC

FreeCooling with low noise

CityMaster is the most quiet FreeCooling unit without an external silencer in AirSites' product range. It offers Free Cooling capacity of up to 5 kW heat load** and a sound pressure level of 30 dB(A)***. Ideal for operators who require an exceptionally low noise level outside their equipment rooms.


  • Sound insulation including extra sound-absorbing baffles
  • EC fan with external rotor motor
  • 1 filter ePM10 70% (M6) 490x592x360
  • 1 outdoor sensor

Electrical data, fan unit

  • Voltage 48 V DC
  • Rated power 343 W
  • Rated current 7,3 A
  • Speed 1287 rpm
  • Sound pressure level 31 dBA (10 m)

Fan unit, airflow, dimensions, and weight.

  • 756 l/s at external pressure of 50 Pa and clean filters
  • Approved ambient temperature -25°C…+60°C
  • Weight 78 kg
  • Cooling capacity at Δt 2K* = 5-6 kW

Classifications according to IEC

  • Fan motor: IP42
  • Temperature sensor: Protection Class II
  • Connectors: IP20
  • DeltaManager: IP54

* Variations may occur depending on the site.
** Delta-T 5K heat load 5 kW
*** Sound pressure level 30 dB(A) at a distance of 10 meters from the source.